John f



(No M0ae1.)f K v j J. I'. 'MAEDER VENT.

No. 417,435. Y Patented Deo. 17, 1889.

:t ;".2.'/;//fy- UNITED STATES 'PATENT OFFICE. l

JOHN F. MAEDER, OF CHICAGO, ILLINOIS,

VENT.

SPECIFICATION forming part of Letters Patent No. 417,435, dated December17, 1889. l Application filed October 8, 1889. Serial No. 326,311. (Nomodel.) I

subject of the Emperor of Germany, residing at Chicago, in the county ofCook; and State of Illinois, have invented a new and useful Improvementin Vents,`of which the following is a specilication.

My invention relates to an improvement in theclass of vents used with`barrels. to allow air to pass in as the liquid contents are drawn off,and more especially with barrels containing liquids charged withcarbonio-acid gas, as beer, ale, and the like, to permit the ingress ofair necessary to produce the internal pressure for effecting thedischarge of the liquid contents on opening the faucet, but withoutpermitting` the escape of carbonio-acid gas through the vent-openingeither during such discharge or while the faucet is closed.

The object of my improvement is to provide such a vent of simpleconstruction, which shall permit ready access to its parts for cleansingpurposes, and which shall serve effectively its purpose and particularlyin its function of preventing` the contents of the barrel on which it isused'from becoming Y flat by losing its enliveningconstituentcarbonio-acid gas.

In the accompanying drawings, Figure l shows my improved ventinelevation, and Fig. 2 is a vertical longitudinal section of the same.

The vent A involves ahollow body portion r, which should taper, asshown, from near its upper closed end to its opposite open end, or atleast be contracted toward the end which is driven into thevent-openingin the barrel or keg, and a tubular branch q, extending atan angle (preferably a right angle) from near the enlarged end or headof the body-portion r, the

- branch q being closed at its outer extremity and containing in itsunder side a screw-plug having a centrall opening o, in which extendsthe stem n of a valve n, having its seat in the inner end of the openingo.

The device may be formed of any suitable metal; but I prefer to cast itof malleable iron, with the branch q integral with the body portion, butthen in the form of a solid extension, requiring subsequently to bebored out. The boring is performed from the outer end of the branch, andthus affords an opening entirely through it, requiring that it be closedat the outer end. To effect this closing, I prefer to use a screw-plugm, since the latter is easily adjustable and removable to vpermit readycleaning of the interior of the branch and body portion.

For the more thorough cleansing of the device, which may be requiredperiodically, it should, while separate from any receptacle with whichit is designed for use, have steam blown through it, which is mostreadily accomplished by introducing the steam at the contracted open endof the part r after having removed the plug p or m, or both plugs.

As will be understood from the foregoing description and inspection ofthe drawings, the device when driven into the vent-opening of a barrelnormally seals such ventopening, since the valve n is then against itsseat; but that when the faucet is opened to draw off the contents thevalve is raised bythe inuX of air to close only 1,when the faucet isturned off.

What I claim as new, and desire to secure by Letters Patent, is

A vent A, comprising, in combination, a body portion r, having a lateraltubular eX- tension q, provided with a lateral opening containing anadjustable and removable plug p, having an opening o, a valve fn, seatedin the tubular extension over and having its stem n in the opening o,and a plug m, removably inserted into the outer end of the extension q,substantially as described.

J. W. DYRENFORTH, M. J. FROST.

